Patent GB-493638-A (GB)
Abstract: 493,638. Cash registers. SVENSKA KASSAREGISTER-AKTIEBOLAGET. May 7, 1937, No. 13111. Convention date, May 7, 1936. [Class 106 (i)] In a cash register or like calculating machine, the mode of operation control member is positioned during the return movement of a differential member that makes a to- and - fro excursion at the beginning of each operation under the control of a bank of operation selecting keys. The machine is adapted for dealing with multiple - item transactions, the totals of such transaction being automatically transferred to the selected one of a group of transaction totalizers and, for certain kinds of transaction, also to a clerk's totalizer. The machine may be modified to enable items of multiple-item transactions to be entered directly into selected transaction and clerk's totalizers, the ensuing multiple-item total-taking operation serving merely. to reset the multiple-item totalizer. The transactions are recorded on a record strip and voucher. Keyboard. In addition to the usual amount keys 12, Fig. 1, the machine is provided with a bank of totalizer-selecting keys including a group of transaction keys 10 and a group of clerk's keys 11 co-operating with separate differential mechanisms, a bank of operation control keys 13 and the usual motor or starting bar 14. The operation control keys include multiple-item and multiple-item total keys, a voucher-issue disabling key, an error key, and subtotal and total keys for the clerks and transaction totalizers. In single-item operations no operation key is depressed, the differential for the bank being arrested by a stop pawl. A clerk's key and a transaction key are depressed in all single and multiple item operations, but the selected clerk's totalizer is not engaged for credit and paid-out transctions. Interlocks are stated to be present for preventing the setting of an amount, or the depression of more than one totalizer-selecting key, or of a totalizer. selecting key of the wrong group in total and subtotal taking operations, and for preventing depression of the voucher-disabling key in multiple-item and total-taking operations. Differential mechanism. The differential mechanisms for the amount banks are of the kind described in Specification 378,931, and each comprises a differential actuator rack 42, Fig. 2, carrying abutments 88 and adapted, when released by a key-controlled stop-pawl 87 and a cam-operated restoring bail 112, to rise under the action of a spring 89 until arrested by the stem of a depressed key. Teeth on the actuators serve to enter the items into selected totalizers on shafts 19, 20, 21, during the restoration of the actuators. Associated with each actuator is an indicator rack 98 adapted to set clerks' and customers' indicators 103, 104 and type-wheels for the record strip and voucher. As the bail 112 rises to release the actuators, it abuts and restores the indicator racks set during the previous operation. Each indicator rack is now coupled to its associated actuator by a wide pinion 109, so that during the subsequent restoration of the actuators the item standing thereon is transmitted to the indicating racks and thence to the indicators and printing mechanism. The differential mechanism for the operation-control bank is shown in Fig. 4, and the separate differential mechanisms for the clerks' and transaction groups of the totalizer-selecting bank are shown in Fig. 3. These mechanisms are similar to those for the amount banks, but have their differential racks set and restored at an earlier stage in the cycle of operation to enable the kind of operation to be determined, and the desired totalizer or totalizers to be selected, prior to the operation of the amount differentials. The totalizers. These are of known construction and have transfer mechanism of the kind described in Specification 451,316. The machine is provided with a row of four clerks' totalizers on shaft 19, Fig. 2, a row of four transaction totalizers on shaft 20 and a multipleitem totalizer on shaft 21, though it is stated that more than one multiple-item totalizer may be provided. The totalizer shafts are mounted on frames 25 movable radially of shafts 27 to engage the totalizers with the actuators, selection of desired totalizers being effected by shifting the frames axially of the shafts. The totalizer wheels are aligned by spring detents 33, the wheels of a selected totalizer being freed, as the totalizer is engaged, by cams 41 on the associated shaft 27 that is rocked at this time. Totalizer selection. In the normal position of the clerks' and transaction rows of totalizers, no totalizer is in position for engagement. However, upon the operation of the machine with a clerk's or transaction key depressed, the movement of the associated indicator rack 83 or 85,Fig. 3,is transmitted through rack-and-pinion mechanism 82, 81, 76, 75 to the selected totalizer frame 25 and the desired totalizer is aligned with the actuators. Totalizer engagement. A totalizer row is shifted into engaging position by rocking its supporting shaft 27, whereby a stud 39, carried by an arm of the shaft and embraced by a slot in the frame 25, moves the latter towards the actuators. For the purpose of rocking the shafts 27, an arm of each shaft is connected by a link 44 to a roller 50, Figs. 4 and 9 .. 11, that passes through shaped openings in three plates 46 ... 48 oscillated in accordance with adding, subtotal-taking and total-taking timing by cams on the main shaft 66. The rollers are positioned in the openings by the indicator rack 55 of the operation - control bank, which rack is provided with slots embracing the rollers. The openings are provided with constrictions to enable the plates operatively to engage the rollers, the constrictions being so positioned that the totalizer rows are selected for engagement and are engaged and disengaged according to the requisite timing to carry out the operation selected by the depressed control key. Thus, in the highest or multiple-item position of the rollers, the multiple-item totalizer is engaged for adding (constriction 73, Fig. 9) ; in the second, or single-item position, the clerks' and transaction rows are engaged for adding (constrictions 67, Fig. 9) ; in the third position, the clerks' and transaction rows are engaged for total-taking (constrictions 69, Fig. 10); in the fourth position, the clerks' and transaction rows are engaged for subtotal-taking (constrictions 68, Fig. 11) ; and in the fifth or multiple-item total position, the multiple-item totalizer is engaged for totaltaking (constriction 74, Fig. 10) and the clerks' and transaction rows for addition (constrictions 67a, Fig. 9), whereby the total taken from the multiple-item totalizer is entered into a clerk's totalizer and a transaction totalizer. " Charge " and " Paid Out" transactions. Single items and multiple-item totals relating to these transactions are added into the respective transaction totalizer, but not into a clerk's totalizer though a clerk's key " is depressed. For this purpose a device is provided to disable the clerk's totalizer row engaging-means in these transactions. This device comprises a slide 133 mounted on the adding plate 46, Fig. 9, and having projections forming the operative sides of the constrictions 67, 67a. When the " Charge " or " Paid Out" key is depressed, the indicator rack 85, Fig. 3, of the transaction bank is so positioned that through means including a cam-slotted lever 130, the slide 133 is raised to render the adding plate ineffective to engage the clerks' row.